Index: dspam-3.9.0-r1.ebuild
===================================================================
--- dspam-3.9.0-r1.ebuild	(revision 280)
+++ dspam-3.9.0-r1.ebuild	(working copy)
@@ -89,6 +89,17 @@
 	if [ "${STORAGE_DRIVERS:0:1}" = "," ]; then
 		STORAGE_DRIVERS="${STORAGE_DRIVERS:1}"
 	fi
+
+
+	if [ "${STORAGE_DRIVERS}" = "" ]; then
+		eerror
+		eerror "You have not selected any storage driver."
+		eerror "Please enable one of the following USE flags:"
+		eerror "  hash, mysql, postgres or sqlite"
+		eerror
+		die "No storage driver selected"
+	fi
+
 	if [ "${STORAGE_COUNTER}" -gt 1 ]; then
 		if use static; then
 			eerror